Execute HQ9+/Ruby

Execute HQ9+/Ruby is part of RCHQ9+. You may find other members of RCHQ9+ at Category:RCHQ9+.

<lang ruby>class HQ9plus

 def initialize(opts={})
   @program =  if    opts[:program]  then opts[:program]
               elsif opts[:filename] then File.read(opts[:filename])
               else  
               end
   @accumulator = 0
 end
 attr_reader :accumulator

 def run
   dispatch = Hash.new(:unknown)
   dispatch['h'] = :hello
   dispatch['q'] = :quine
   dispatch['9'] = :beer
   dispatch['+'] = :accumulate

   @program.downcase.each_char do |char|
     self.send dispatch[char]
   end
 end

 def hello
   puts "Hello, world!"
 end

 def quine
   puts @program
 end

 def beer
   puts '99 bottles here ...'
 end

 def accumulate
   @accumulator += 1
 end

 def unknown
   # do nothing
 end

end

hq9 = HQ9plus.new(:program => '+qhp;+9Q') hq9.run puts hq9.accumulator</lang>

Output:

+qhp;+9Q
Hello, world!
99 bottles here ...
+qhp;+9Q
2